MKVtoolnix very slow (hard drive issue?)

[Chengbin]

I'm trying to mux a video file on a DVD disk to avi (and doing some cutting) and copying it to my external hard drive. But this muxing is REALLY slow. I noticed that my hard drive is extremely busy even though I'm copying to the EXTERNAL hard drive. I think my hard drive is the bottleneck issue? But why in the world is my hard drive spinning when it should ONLY be my DVD drive and my external???

[johnsonlam]

I'm trying to mux a video file on a DVD disk to avi (and doing some cutting) and copying it to my external hard drive. But this muxing is REALLY slow. I noticed that my hard drive is extremely busy even though I'm copying to the EXTERNAL hard drive. I think my hard drive is the bottleneck issue? But why in the world is my hard drive spinning when it should ONLY be my DVD drive and my external???

Well, you did the job in the slowest way. Bottleneck usually on the I/O.

Try using 2 different physical drive (better SATA) or a large RAMdisk to do the job, and you can break down the process, eg. Decrypt DVD to hard drive first, then process video in RAMdisk, afterall copy the finished video to external drive.